src/share/classes/sun/rmi/transport/DGCAckHandler.java

*** 116,125 ****
--- 116,128 ----
       **/
      synchronized void startTimer() {
          if (objList != null && task == null) {
              task = scheduler.schedule(new Runnable() {
                  public void run() {
+                     if (id != null) {
+                         idTable.remove(id);
+                     }
                      release();
                  }
              }, dgcAckTimeout, TimeUnit.MILLISECONDS);
          }
      }